/*
 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
/*
 * Copyright 2003-2004 The Apache Software Foundation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/*
 * $Id: Version.java,v 1.1.2.1 2005/08/01 02:11:19 jeffsuttor Exp $
 */
package com.sun.org.apache.xalan.internal;

/**
 * Administrative class to keep track of the version number of
 * the Xalan release.
 * <P>This class implements the upcoming standard of having
 * org.apache.project-name.Version.getVersion() be a standard way
 * to get version information.  This class will replace the older
 * com.sun.org.apache.xalan.internal.processor.Version class.</P>
 * <P>See also: com/sun/org/apache/xalan/internal/res/XSLTInfo.properties for
 * information about the version of the XSLT spec we support.</P>
 * @xsl.usage general
 */
public class Version {

    /**
     * Get the basic version string for the current Xalan release.
     * Version String formatted like
     * <CODE>"<B>Xalan</B> <B>Java</B> v.r[.dd| <B>D</B>nn]"</CODE>.
     *
     * Futurework: have this read version info from jar manifest.
     *
     * @return String denoting our current version
     */
    public static String getVersion() {
        return getProduct() + " " + getImplementationLanguage() + " " + getMajorVersionNum() + "." + getReleaseVersionNum() + "." + ((getDevelopmentVersionNum() > 0) ? ("D" + getDevelopmentVersionNum()) : ("" + getMaintenanceVersionNum()));
    }

    /**
     * Print the processor version to the command line.
     *
     * @param argv command line arguments, unused.
     */
    public static void _main(String argv[]) {
        System.out.println(getVersion());
    }

    /**
     * Name of product: Xalan.
     */
    public static String getProduct() {
        return "Xalan";
    }

    /**
     * Implementation Language: Java.
     */
    public static String getImplementationLanguage() {
        return "Java";
    }

    /**
     * Major version number.
     * Version number. This changes only when there is a
     *          significant, externally apparent enhancement from
     *          the previous release. 'n' represents the n'th
     *          version.
     *
     *          Clients should carefully consider the implications
     *          of new versions as external interfaces and behaviour
     *          may have changed.
     */
    public static int getMajorVersionNum() {
        return 2;

    }

    /**
     * Release Number.
     * Release number. This changes when:
     *            -  a new set of functionality is to be added, eg,
     *               implementation of a new W3C specification.
     *            -  API or behaviour change.
     *            -  its designated as a reference release.
     */
    public static int getReleaseVersionNum() {
        return 7;
    }

    /**
     * Maintenance Drop Number.
     * Optional identifier used to designate maintenance
     *          drop applied to a specific release and contains
     *          fixes for defects reported. It maintains compatibility
     *          with the release and contains no API changes.
     *          When missing, it designates the final and complete
     *          development drop for a release.
     */
    public static int getMaintenanceVersionNum() {
        return 0;
    }

    /**
     * Development Drop Number.
     * Optional identifier designates development drop of
     *          a specific release. D01 is the first development drop
     *          of a new release.
     *
     *          Development drops are works in progress towards a
     *          compeleted, final release. A specific development drop
     *          may not completely implement all aspects of a new
     *          feature, which may take several development drops to
     *          complete. At the point of the final drop for the
     *          release, the D suffix will be omitted.
     *
     *          Each 'D' drops can contain functional enhancements as
     *          well as defect fixes. 'D' drops may not be as stable as
     *          the final releases.
     */
    public static int getDevelopmentVersionNum() {
        try {
            if ((new String("")).length() == 0)
                return 0;
            else
                return Integer.parseInt("");
        } catch (NumberFormatException nfe) {
            return 0;
        }
    }
}
